<What do you make of the problem statement and what was your approach to solve it. This helps one understand whether you have understood the problem correctly>
<What is your core idea. Explain it in simple terms: focus on not just what the idea is but also how it works and why it's a good idea. The more detailing the better. Ideally, your ideas should connect with an insight you have or something that came up in research. Supplement your ideas with wireframes/annotated screens/mocks for better impact>